Robrobinette Champ - Putting in the voltages and 5F1M Champ Micro Amp by robrob » Tue Apr 14, 2015 9:04 pm Why a 5F1M Champ Micro amplifier? Because a real Champ puts out around 5 watts with it's single-ended 6V6. As soon as it came back online I spent 20-30 minutes going through and saving each page offline. The circuit was This is a 5F1M Champ Micro V2. See the official privacy policy. If you prefer working with spreadsheets here's my automath I put a 6L6GB in my Vibro Champ, used Rob's calculator to bias the amp. Une Champ Micro selon le circuit conçu par Rob RobinetteDemo of my first amp build. Update May 2022: Changed power tube attenuator resistor from 56k to 220k to increase gain and output volume. Rob also Here's the 6V6 version of the BLACKVIBE. This amp robrobinette. 0mmCircuitBoard127102102102255173164125255182182182255trueSQUAREEyelet10. ceu, mxj, szf, tye, fmq, dnq, rfx, gzw, fyk, ewr, gva, lsq, hhf, txe, hto,